Piercing machine



Nov. 3, 1931. H. c. MOULTON 4 1,830,404

PIERCING MACHINE Filed Aug. 4, 1928 5 Sheets-Sheet 1 OOOOOOO :4 i INVENTOR ORNEY Nov. .3, 1931. H. c. MOULTCN 1,830,404

PIERCING MACHINE Fixed Aug; 4, 1928 5 Sheets-Sheet 2 Nov. 3, 1931.

H cQ MOULTON PIERCING MACHINE Filed Aug. 4. 1928 5 Sheets-Sheet 6 INVENTOR BY Tm I I RNEY- Nov. 3, 1931. I n. c. MOULTON 1,830,404

PIERCING MACHINE Filed Aug. 4, 1928 5 Sheets-Sheet 4 Nov. 3, 1931. H. c. MOULTON PIERCING MACHINE 5 Sheets-Sheet 5 Filed Aug. 4, 1928 Patented Nov; 3,;1931

or eice Enemy 1:." moumonfior mmnnnwoon; urssoum nsslenon ITO LEWIS INVISIBLE -611M011 MAcfimE;GQM2AN,,;QE T; LOUIS, MISSOURI, A conronerronsor MAINE es MA E v manatingnemu m '4, take. w's 'niii 10.5mm.

Q inve'ntion generall y relates to piercing machines having rotatable piercingiawls and I being adapted for simultaneously ipiercing numerous: superposed-layers of cloth to mark the intended positions -o'f 'bujtton' hole s, buttons ol the like tin a'eeorrdjance with 'a master pattern, and the =said"1'nventionprimarily has for its object t' providecertain new and useful improvements over =the fpiercing machine struc'ture' disclosed in' the patent 'to Connor"'1';39 8-,4:1-9, issued*Noveniber=29 ,'1921, whereby a :more comp act and efliciently operable piercin'gmachine i'si=pr0vided, one in which the parts may be more easilyas sem- Bled and' disassembled,'fand inwhich "is provid'ed a" safety} device to {hold "the ip 'er'cin'g and elevated iIlQZLHiQIlIIGiasfilmng against inadvertent droppin or 'loweringof the said a-wel-and the carryingparts. j Y

More specificullyfthe 'nvention has for its object to provide in a machine of the type stated, novel 'means 'to guide the movement of the piercing awl; -no vel jine'ans to mount and center the standardtube'on the supporting. base; 'a novel niotor"head novelcom posite telescopic tubes and means" to 1 secure dropping. I i Anotherlobject 0f theginwention :"is .to pro them individually and coll eeti vely tothe motor head in a manner' permitting-removal of {the motor head' with or without said com posite I tubes; noveljniean'sjto guide and 'perinit'rclativemovement of the telescopiccom posite and standard tubes,iand ainovel safety means :for securing i'the telescopic tubes at the elevated spositi'o" against -in-advertent.

1 vide anlindirectgear-drive.betweeniheanotor 1 headeand itheirotatable awl, toinipart niore' powerful torquezto the isaidravil;

.uhnother object of the; inventioneistto,

' vide a standard base unite afstandard motor head unit and a-.- ear';case Whereb ",thelb ase l: .7

unitand lthe headunit be directly connected to provide a threat" drive machine, or

indirectly connected, by interpolition ofith e gear caseand substantially iviithoutehange,

' to provide an indirect or gear 'drive mac hin'e.

V v "Withthese and otherlobjectsih, view which \vill niore f-lfu'lly appean the nature et the invention will be more elearly understoodgby 'bavonet'slot equipped tube, I v

:zFigure-b is" a detail sectional perspective view-of the upperend of the standard tube,

,li igure 6v is a horizontal section taken on the :line 66 ofFigure 3,

Figure 7 is an enlarged horizontal section taken on the 1ine.-7J-:7-0f Figure 3, 1

- .'Figure,- 8is".ahorizontal section taken on the line i8--.8@of Figure 3, r I

F'gure 9.is afihorizontal section taken on the 'line' 9-9-of FigureS,

-Figure I0 is-a detail perspective view of the Eguide spider, '3 Figures "11 and 12 'are'topand bottom per spect-ive'views respectivelv of the gear case, Figure 1'13 is a perspective view illustratingthe innerandouter tube members separated butiin associated relation,

T Figure llisan inverted perspective view of thezstandardized motor head,

E Figure "15 is-aperspective View of a standardizedibaseunit complete,

-Figure I6 is a perspective view of 'a headunit complete, the same being of the direct drive type, I i v H F'gure 17 is a' entral longitudinal section of the upper half of a'idirect drive machine, v

'Figure '18 is. a' horizontal section taken on the line 18-218 0f- Figure -17, and

Figure 19 is a detail section taken on the line19--19 oflFigure 5. i

Like reference numerals designate corresponding? parts throughout the several figureskof *thedra-wings. YuIn the practical'sdevelopmentof the invens mnm "QT 13 is assured.

tion, employ a base ring'l providing a central opening to permit passage of the piercing awl or tool and for sighting thematerial to be pierced to facilitate the positioning of the tool. 5 Integrally formed spider arms 2 extend upwardly from the ring and carry a clampicollar 3 which is split as at 4 and ex; te ded to form a lamp ear 5 opnosed to one;

spider arm, the ear'and the opposed spider arm bein p ovided with aperturesto receii e a clam bolt 6. 1 v a A tubularstandard 7 is 'securelv clam ed in u right pos tion in theol ar 3 and with its lower end e tendin r 'sliohtlv below the sa d collar as at 8 to seat in the annul r cen te inlq' seat 9'formed in the guide s ider 10 w ich is eouinped with e rs b wh ch is sc w-secured as atl to the collar 3. i The ou de sp der-has a, centrallv disposed uide colla 12in which a quide member 13 is movab v mounted vand secured as at 4. 'T e prov sion of the, removable g de memh'erena es the sub itution of guides o a"eo d w h the iercing tool in use at a particular time and bv reason of the TITO- s o of the exte e end an se t mountin R and 9. the positioning of t e sa d standard in him axial a inement' with the guide The standard 7'is provided at its outer face wi h' ora ua ions or ind cat ng markin as 15 bv which the stroke or depth of enefrat-ion of the piercing tool mav be determ ned. and adiacent its-up er end the said s ard'is recess d as at 16 and provided wi h a slot l exte i throu h the recessed wall. A leaf spring 8 isnositioned inrthe rece s and has one end hereofscrew-secured as'at 19 to the rece sed wall, and t e other s end f ee a d nroviderl'wuh a fin rer lift portion 20. The f ee end of he spring carries a detent 21 which wor zs th ough the sl'ot'l'? and nroiects into he interior of the tubular andard. The dete t m be withdrawn from proiection into'the'hollow of he stan d a d' b enna sing the free end of the spring w th the finoer and pulling; it outwardly] A stop s rew 22 is rovide and is positioned o en aqe the-detent andlimit outward retrm-Hon thereof- 'A snlit-stop' collar 23 is slidahle on the standardand has provision at 24 for b einq clamped a selected positions ont e standard. t e markin s l5 s'erving to ac litate such positionin The puroose of the shrine ent and of the stop collar'will be xplained later. I p

The arts thus far described may be said to ronstitute a standardized-base unit. The h-ead unit. which when mounted on the base unit-completes the machine. "compr ses a standardized motor head-atool stock and toolfdr v'e'n bvgthe motor of the headfa nd composite t-ube memhers adapted to remorablvand te escopically fitthe base standard and to serve as toolstock supporting and bearing and encasing handle providing means.

Ihetube members are secured to the motor head to coj mplete the head unit, one of the direct drive types of which is disclosed in Figure 16 of; the drawings. .A base unit is shown inFigure 15. 7 a

I will now proceed to describe the standardized motor head which is shown operatively mounted-in Figures L2, 3,16and17,

*- fand-dismounted and' eq'uippe d for an indirect or intermediate gear drive mounting in Figu're'14'." v a The head comprises a motor casing 25 having a top hub 26 equipped with a thrust take field 33, armature'34 andcommutator'35ithe latter beingengaged inthe usual manner byspring pressed brushes 36. A disc 37 is mounted on the armature shaft abovethe brushes and serves tothrow-excess lubricant away fromjcontact withthe commutator and brushes and therebyassures cleanand efiicient contactof the'saidparts. 3

A suitable attachment'mea ns is provided on the head by 'whichicord attachment with a source ofelectric currentsupply mav convenientlv be ma do. and the su plying of current to the motor is'controlled by a switch 38, also'carried by the said head. V a

The cross wall equipped lower end of t e motor casing iscored outas at 39 to provide an annular seating. flange 40 and abutment shou ders to facilitatemountina of the remaining parts which are attached tothe motor head. to make up the head unit. For

this purpose also. the field mounting bolts 41 are'extended a distancethrouqh the cross wall and threaded as at 42. :The manner'of emnlovinsz'the exte ded bolt ends will be exp ai ed later. See Figure 14.

When the, motorih'ead is mounted for use" a coupling-head 43 is secured onthe lower end ofthe armature shaft to extend below the motor head and interlock with a similar coupling he'ad lc secured on the upper end of the -.t'ool stock45 which carries the tool clamping 1 chuck46 atits lower end. By reason of the arrangement. of the, armature and tool stock shafts 28 and f45 in longitudinal alinem'ent and connecting" them bv the loose cou ling 43-4 l to impart the rotation of the shaft 28 to the said shaft 45, it is possible to remove the motor head without disturbing the bearings of either of the shafts 28 or 45, the cons lie ' tion bearing 51% forthe said stock; 7

mam between the shafts: beings-readily biokenat-theloosecoupling "1,;The tol stock is mounted in an inner be secured to the. motor head in a man ner soon. to be; described, and thesaidhead-52 V outer face of the tubjefmember} 47 and'terr I min-ates at its lower z'end in a right angled into the slotway 54+55 and the'tube member" I i P 'O Bd with l1ole -:53:t p r thg I bo projectionslez a A; longitudinal slot; 54 is, formed in the turn ,or later-al portion 55 -which: is stepped up over a-portion offitsupper wall toprovide a stop lip 56, The-spring; detent 21- projects 1 47 i'szte leseopically mounted. in the standard so-thatitmay beraised asindicated in Figure 2 to;elevatecthevpiercing tool outof contact- Zwith theworkc Thenengagement'of the de- 1 "tent" in: the portion 55-holds the head :unit 1 elevated and-until: the head unit has been lifted-slightlyto clearthe clip '56 and then turned; slightlyito bringthe detent; in a reg:

'ister with the slotway h the said head unit cannot 'be lowered. Thus-the machine is provided: with a safety. i'equipment' assuring v againstflinadvertentdropping of the head unit-from its elevated position.- I

A compo'site sleeve member 57 surrounds" .thestandard: and ac-ssas ahandle for carry- I I th niachineas a1 wholeand forzlifting and: lowering, the head unit." The member, 57 comprises an inner tube of metal and. an

outer covering shell" of hardirubber or the likenland to provide for mounting the said member the metal tube has a securingv plate 4 head 58 welded onozherwise secured on the upper endl thereof; as at L 59. I The metal and chardi rubber tube. members are secured to,

getherasl a unitby-the-screw- 60.- See Figure 3 a'nd13.

The plate head provided with holes Glwhich register with the holes 5301f thefplate head 52 and are countersunk to receive the socket screws 62 by whichtheplate heads 52 and 58'arejcla'mped'together and to the motor j "head; It-will be observed byreference to; Figures-Band 17that thehead. 52fits within Q the flange 40 of the motor head. and: is cent cred. thereby, assuring i proper alinement of I the armature shaft Iandltool stoclniandf by reason of themounting ofthe composite tube v 'j V with the inner tube, that tube too isthus held A v V n1ounting thetube' also provides a for shortenpropenaxialalinement.I This; manner of inglthe overall length of the 'mach inejandal lowsfor the removal of' themotort head in dividually' or collectively with theinner tube ea e PQS tesl e m m e a cam grooveway 63 extends through the lower end I of. the inner" tube' and leads into the lateral portion' 55ofi the bayonet slot. 'Thus when the headunit' has been removed from the; base unitandiit, is again desired to detent into the bayonet slotj'andcooperatively assemble the parts in position such as is-indicated inFigure 20f the drawings, I

The contacts bywhich the motor may be cord at ached to a source of current supply ar'eindicated at 64..'

5A lubricant retaining disc;,.65- is mounted beneath the bearing. 51 to preventu leakage of lubricantdown over the chuck and onto the awlor. piercing. tool 66 clamped in the chuck. i

- It will be observed by referenceto-Figures 1;. and-3 of the drawings that the composite tube or sleeve 57 seatson the stop or gage collar 23; and limits downward movement of the he ad unit in; theintended degree;

, In--the foregoing descrip ion, I haveidisclosed astandardized motor head, a standardized base unit, and standardized intermediate tube members cooperatively assembled; as shown in Figures 16,17 and-l8toprovide a machineiof the-direct drive type: wherein the armature shaft. and the tool} stock are vcoaxially aligned and directly connected.

It may be desired? at times, however, tfo-indirectlyi drivethe tool stock by speed 'redu'ction gears toapply a slower speed butmo're powerful torque tothe piercing, tool and 5 I have shown such an arrangement inF-igures l, 2, 3 and 6 of the drawings. I

In this adapta ion of the invention the same standardized parts above described are used, itjbeingnecessary only to 'interpose a gear case between the tube members and the mansform Tofu theinvention 1a spacer sleeve-67 ismOunted-in the upper counter bore-?t8:to raisethe. upper bearing to adapt ittor, takinga like constructed but slightlylonger. tool, stock 45 having alargegear '68 secured thereon as atv69.

sm allgear TO-is secured on the armature sharft byhub and setscrew'equipment 71 and a bearing collar 72 isfcarried by the smallgearhuo, a a 1 Q A gear case 7 3 is-provided and is cored out as at 74. to; provide chambersfor the gears, centering bore 75 being: also providedthrough thelower fa'ceiof'the case to receivethetube plate head 52, and abutment shoulders 7 6 to abut the said head 52 when it is clamped to position. See FigurellQ; I The upper faceof the gear case a is provided with an'upstandingcentering hub/77 which will seat within the'motor head flange when the partsare assembled, and with a bore 78. to rotatablyreceive the gear'collar 72;

See'Eigures 3 and 11.

- V Inc-this form of-the invention, longer socket screws 7 9 are employed to'secur'e the gearcase' to the motor head,

andthey'are fitted through holes80 in the-gear case.

' To remove the head unit it is only necessary to elevatethe head unit to the-I position -illustrated in-Figure 2 when the spring detent equipment may be finger manipulated to release the detent and'en'able separation of the said units.

No screws'orother wholly removable element's'thatmight belost when removedare employed in this connection.-- 7 I 'In the foregoing description, I have disclosed an improved piercingmachine having advantages of simplicity andcompactness of my invention.

1. In a device 'port'havlng a slght opening and a central 7 construction and neat in appearance, in which novel means is provided forcentering the tubular members relatively to eachotherand to the piercingtool, novel standardized] and interchangeable ,unit structures, and novel means to" cooperatively and compactly assemble the said*units.-

It is of course to be understood that the details of structure and'arrangement's of parts may be variously changed andmodified with-' out departing from the spirit and scope of Iclaim: I

of the class described, a suppiercing-element receiving opening, an electric motor head including an armature shaft,

' two telescopic members one connected'to the support and the other with the motor head,

atool stock adapted tobe rotated by the armature shaft and movable with and rotatable within one telescopic member, apiercing tool carried by the stock, one telescopic, member baving abayonet slot therein including a longitudinal slot portion and a'later'al slot por tio na detentcarried by the other telescopic member and projected into the bayonet slotto I guide telescopic movementof-the telescopic members and to enter the lateral slot portion and hold the members at the tool raised position, and asafety stop lip projecting into thelateral slot" portion tobe engaged by the detent to lockjthe'parts against inadvertent collapse, sa d detent being'mounte'dbn a finger releasable spring support.

2. In a device of the class described, a suppo'rtihaving a sight opening and a central piercing element receiving opening, an electric motor head including an armature shaft,

from the base unit, 7

two telescopic" members oneconnected 'to the 7 support and the other withcthe motor head,

a tool stock-adapted to berotated by the ar-J matureshaft and movable'with and rotatable within one telescopic membena piercing tool carried by the stock, one 'telescopiclmember having a bayonet slot therein including a longitudinal slot portion and a'lateral slot portion, a detent carried by the other telescopic member and projected into the bayonet slot to guidejtelescopic movement oft'he telescopic'members and toenter the lateral slot portion and hold the members at the tool raised position, and a safety stop lip project-' ing intothe lateral slot portion to be engaged by the detent to-lock the parts against inadvertentcolla-pse, said detent being mounted on. a finger releasable spring support 'countersunk into the outer wall 'of'one of the tele scopic'members and accessible when the tool 'is fullyraised.

4 3. In a device "of-the class described, a

7 support having a sight opening and-a'central piercing element receiving opening, an electric motor head including an armatureshaft, two telescopic members one 'connectedfto the support and the other withthe motor head, a tool stockjadapted to'be rotated by'the armature shaft and movable withi'androtatable within one telescopic member, a'piercing tool carried bythe stock, one telescopicmember having a bayonet slot thereinvincluding a 7 longitudinal slot portion "and-a lateral slot portion. a spring detent-carried by the other tele copic member and projected intofthebayonet slot to guide telescopic movement of the telescopicvmembers and to e'nterj the lateral slot portion and hold the'members at the tool raised position, and a safety stop lip projecting into the lateral slot portionltobe en? 1 gaged by the detent to lock the parts against support and the other with the motor head,'a

toolstock adapted to be rotated by the arma ture shaft and movable with and rotatable within one telescopic member, a piercing tool carried by the stock, one telescopic member havingabayonet slot therein including a longitudinal slot portion and a-lateral slot portion, a detent carried bvthe other tele-: scopic member and'proj'ected into the bayonet slot togguide telescopic inovement of the telescopic, members and to enter the lateral slot portion and-hold the members at'thetool raised position, and a sa fety stop lip projecting into the lateralslot portion to be engaged r i scopic members and accessible when the tool o is fully raised, and a stop screw to limit releasing movement of the detent. o v

5. In a device of the class described,'a* support having a single opening and a central piercing element receiving opening, an electric motor head including an armature shaft,

1 two telescopic members one connected to the i and alateral slot portion, a detent carried by the other telescopicmember and projected o support and theother with the motor head, a tool stock movable Withand rotatable within one telescopic member, 'meshing speed change gears on the armature shaft and tool stock adapted to impart rotation from 'the former to the latter and to ofiset the1n,a gear 7 case to house the gears and secured to the motor head and to the saidfother telescopic member, a piercing tool carried by the stock, one telescopic member having a bayonet slot therein includinga' longitudinal SiOt portion intothe bayonet slotito guide telescopic movement of the telescopic members and to enter I ,the lateral slot portion and hold themembers at the tool raised position, and a safety stop -*--"lip projecting into thelateral slot portion to signature.

. be'engaged by the detent t 1 k thepart's against inadvertent co ll p,

In testimony WhereofI hereunto afli x my HARLEY o. oULT'oN. I 

